Sleep Research
Study finds pink noise reduced REM sleep in lab trial; earplugs helped protect deep sleep from aircraft noise
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A small sleep-lab study from the University of Pennsylvania reports that continuous “pink noise” played overnight reduced participants’ REM sleep, while earplugs helped blunt deep-sleep losses linked to intermittent aircraft noise. The findings add to a limited evidence base about the long-term effects of broadband “sleep sounds,” and the researchers urge caution—particularly for young children.
Teenagers and young adults who sleep longer on weekends than on weekdays were less likely to report feeling sad or depressed every day, according to a U.S. study that analyzed National Health and Nutrition Examination Survey data from 2021 to 2023.
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Recreational runners who sleep too little or report poor-quality sleep were nearly twice as likely to report injuries as those who sleep well, according to a study of 425 runners led by Professor Jan de Jonge and published in Applied Sciences.